Ingenious, small digital amplifier in the Pro-Ject Box Design, the order is sufficient to bookshelf speakers produces a very clean sound and for all claims, nebem high-end. it is through the small space very critical respect. the formation, whether in the bookcase, on the bedside table or in the kitchen. With the existing 2 inputs (expandable through the Pro-Ject Switch Box) the small amplifier is very well equipped.